Effects of magnetic saturation on various equivalent circuit models of an induction motor are studied. The parameters of 2.2-kW and 37-kW motors with closed rotor slots are analyzed using finite element computations. Both skewed and unskewed rotor slots are studied. The magnetizing inductance not only depends on the main flux, but is also dependent on the rotor current, especially if the rotor ...

A new adaptive technique is presented for building accurate and stable Partial Element Equivalent Circuit (PEEC) models over a wide frequency range. Rational models are generated for impedances corresponding to partial inductances and coefficients of potential over a frequency range of interest, based on a limited number of samples. Delay extraction is applied in order to keep the order of the ...

An inductance calculation method, which is based on calculating the current distribution of a fluxoid-trapped superconducting loop by using the expression of momentum and the Maxwell equations, is reconstructed to enable calculation of arbitrary 3D structures which have a ground plane (GP). Calculation of the mutual inductances of the superconductor system is also incorporated into the algorith...

The Heart of Mersey cardiovascular disease prevention programme in the UK Launched in 2003, following a visit to Finland, the Heart of Mersey (HoM) cardiovascular disease (CVD) prevention programme aims to improve the health of the local population through structural changes at regional, national and European level.(1) Based on the evidence (ie raised blood cholesterol and blood pressure, and t...

protection of water resources from contamination and detection of the contaminants and their treatments are among the essential issues in the management of water resources. in this work, the time-lapse electrical resistivity tomography (ert) surveys were conducted along 7 longitudinal lines in the downstream of the latian dam in jajrood (iran), in order to detect the contamination resulting fro...

abstract saturated water content is one of the important parameters which its measurement is necessary in estimation of soil water retention and unsaturated hydraulic conductivity curves. in several researches, saturated water content is assumed to be equal to soil total porosity. in some others, its value is estimated by pedotransfer functions using readily available parameters, such as bulk d...